ConfigureChecks.cmake

   1 include(CheckIncludeFile)
   2 include(CheckSymbolExists)
   3 include(CheckFunctionExists)
   4 include(CheckLibraryExists)
   5 include(CheckTypeSize)
   6 include(CheckStructHasMember)
   7 include(CheckPrototypeDefinition)
   8 include(TestBigEndian)
   9
  10 set(PACKAGE ${APPLICATION_NAME})
  11 set(VERSION ${APPLICATION_VERSION})
  12 set(DATADIR ${DATA_INSTALL_DIR})
  13 set(LIBDIR ${LIB_INSTALL_DIR})
  14 set(PLUGINDIR "${PLUGIN_INSTALL_DIR}-${LIBRARY_SOVERSION}")
  15 set(SYSCONFDIR ${SYSCONF_INSTALL_DIR})
  16
  17 set(BINARYDIR ${CMAKE_BINARY_DIR})
  18 set(SOURCEDIR ${CMAKE_SOURCE_DIR})
  19
  20 function(COMPILER_DUMPVERSION _OUTPUT_VERSION)
  21     # Remove whitespaces from the argument.
  22     # This is needed for CC="ccache gcc" cmake ..
  23     string(REPLACE " " "" _C_COMPILER_ARG "${CMAKE_C_COMPILER_ARG1}")
  24
  25     execute_process(
  26         COMMAND
  27             ${CMAKE_C_COMPILER} ${_C_COMPILER_ARG} -dumpversion
  28         OUTPUT_VARIABLE _COMPILER_VERSION
  29     )
  30
  31     string(REGEX REPLACE "([0-9])\\.([0-9])(\\.[0-9])?" "\\1\\2"
  32            _COMPILER_VERSION "${_COMPILER_VERSION}")
  33
  34     set(${_OUTPUT_VERSION} ${_COMPILER_VERSION} PARENT_SCOPE)
  35 endfunction()
  36
  37 if(CMAKE_COMPILER_IS_GNUCC AND NOT MINGW AND NOT OS2)
  38     compiler_dumpversion(GNUCC_VERSION)
  39     if (NOT GNUCC_VERSION EQUAL 34)
  40         set(CMAKE_REQUIRED_FLAGS "-fvisibility=hidden")
  41         check_c_source_compiles(
  42 "void __attribute__((visibility(\"default\"))) test() {}
  43 int main(void){ return 0; }
  44 " WITH_VISIBILITY_HIDDEN)
  45         set(CMAKE_REQUIRED_FLAGS "")
  46     endif (NOT GNUCC_VERSION EQUAL 34)
  47 endif(CMAKE_COMPILER_IS_GNUCC AND NOT MINGW AND NOT OS2)
  48
  49 # HEADERS
  50 check_include_file(sys/types.h HAVE_SYS_TYPES_H)
  51 check_include_file(sys/syscall.h HAVE_SYS_SYSCALL_H)
  52 check_include_file(syscall.h HAVE_SYSCALL_H)
  53 check_include_file(grp.h HAVE_GRP_H)
  54 check_include_file(unistd.h HAVE_UNISTD_H)
  55
  56 # FUNCTIONS
  57 check_function_exists(strncpy HAVE_STRNCPY)
  58 check_function_exists(vsnprintf HAVE_VSNPRINTF)
  59 check_function_exists(snprintf HAVE_SNPRINTF)
  60
  61 check_function_exists(seteuid HAVE_SETEUID)
  62 check_function_exists(setreuid HAVE_SETREUID)
  63 check_function_exists(setresuid HAVE_SETRESUID)
  64
  65 check_function_exists(setegid HAVE_SETEGID)
  66 check_function_exists(setregid HAVE_SETREGID)
  67 check_function_exists(setresgid HAVE_SETRESGID)
  68
  69 check_function_exists(getgroups HAVE_GETGROUPS)
  70 check_function_exists(setgroups HAVE_SETGROUPS)
  71
  72 if (HAVE_SETGROUPS)
  73     check_prototype_definition(setgroups
  74         "int setgroups(int size, const gid_t *list)"
  75         "-1"
  76         "unistd.h"
  77         HAVE_SETGROUPS_INT)
  78 endif (HAVE_SETGROUPS)
  79
  80 check_function_exists(syscall HAVE_SYSCALL)
  81
  82 if (HAVE_SYSCALL)
  83     add_definitions(-D_GNU_SOURCE)
  84
  85     check_prototype_definition(syscall
  86         "int syscall(int sysno, ...)"
  87         "-1"
  88         "unistd.h;sys/syscall.h"
  89         HAVE_SYSCALL_INT)
  90 endif (HAVE_SYSCALL)
  91
  92 # OPTIONS
  93
  94 if (LINUX)
  95     if (HAVE_SYS_SYSCALL_H)
  96        list(APPEND CMAKE_REQUIRED_DEFINITIONS "-DHAVE_SYS_SYSCALL_H")
  97     endif (HAVE_SYS_SYSCALL_H)
  98     if (HAVE_SYSCALL_H)
  99         list(APPEND CMAKE_REQUIRED_DEFINITIONS "-DHAVE_SYSCALL_H")
 100     endif (HAVE_SYSCALL_H)
 101
 102 check_c_source_compiles("
 103 #include <sys/types.h>
 104 #ifdef HAVE_SYS_SYSCALL_H
 105 #include <sys/syscall.h>
 106 #endif
 107 #ifdef HAVE_SYSCALL_H
 108 #include <syscall.h>
 109 #endif
 110 #include <unistd.h>
 111
 112 int main(void) {
 113     syscall(SYS_setresuid32, -1, -1, -1);
 114     syscall(SYS_setresgid32, -1, -1, -1);
 115     syscall(SYS_setreuid32, -1, -1);
 116     syscall(SYS_setregid32, -1, -1);
 117     syscall(SYS_setuid32, -1);
 118     syscall(SYS_setgid32, -1);
 119     syscall(SYS_setgroups32, 0, NULL);
 120
 121     return 0;
 122 }" HAVE_LINUX_32BIT_SYSCALLS)
 123
 124     set(CMAKE_REQUIRED_DEFINITIONS)
 125 endif (LINUX)
 126
 127 check_c_source_compiles("
 128 #include <stdbool.h>
 129 int main(void) {
 130     bool x;
 131     bool *p_x = &x;
 132     __atomic_load(p_x, &x, __ATOMIC_RELAXED);
 133     return 0;
 134 }" HAVE_GCC_ATOMIC_BUILTINS)
 135
 136 check_c_source_compiles("
 137 __thread int tls;
 138
 139 int main(void) {
 140     return 0;
 141 }" HAVE_GCC_THREAD_LOCAL_STORAGE)
 142
 143 check_c_source_compiles("
 144 void test_constructor_attribute(void) __attribute__ ((constructor));
 145
 146 void test_constructor_attribute(void)
 147 {
 148      return;
 149 }
 150
 151 int main(void) {
 152      return 0;
 153 }" HAVE_CONSTRUCTOR_ATTRIBUTE)
 154
 155 check_c_source_compiles("
 156 void test_destructor_attribute(void) __attribute__ ((destructor));
 157
 158 void test_destructor_attribute(void)
 159 {
 160     return;
 161 }
 162
 163 int main(void) {
 164     return 0;
 165 }" HAVE_DESTRUCTOR_ATTRIBUTE)
 166
 167 check_c_source_compiles("
 168 void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
 169
 170 int main(void) {
 171     return 0;
 172 }" HAVE_FUNCTION_ATTRIBUTE_FORMAT)
 173
 174 # SYSTEM LIBRARIES
 175
 176 check_library_exists(dl dlopen "" HAVE_LIBDL)
 177 if (HAVE_LIBDL)
 178     find_library(DLFCN_LIBRARY dl)
 179     set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${DLFCN_LIBRARY})
 180 endif (HAVE_LIBDL)
 181
 182 if (OSX)
 183     set(HAVE_APPLE 1)
 184 endif (OSX)
 185
 186 # ENDIAN
 187 if (NOT WIN32)
 188     test_big_endian(WORDS_BIGENDIAN)
 189 endif (NOT WIN32)
 190
 191 set(UIDWRAP_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} CACHE INTERNAL "uidwrap required system libraries")